Finding the Fourth Proportional to 3,631.04, 5,010.83 and 2,139.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,631.04 : 5,010.83 = 2,139.87 : x
2. Step 2: Convert to fraction form
   3,631.04/5,010.83 = 2,139.87/x
3. Step 3: Cross multiply
   3,631.04x = 5,010.83 × 2,139.87
4. Step 4: Simplify right side
   3,631.04x = 10,722,514.09
5. Step 5: Solve for x
   x = 10,722,514.09/3,631.04
6. Step 6: Final answer
   x = 2,953.02